Abstract: Devices, systems, and methods for selectively sintering a powder layer in additive manufacturing processes to achieve a desired heat conductivity are disclosed. A method includes distributing a powder layer in a build chamber, selectively sintering the powder layer to form a plurality of sintered areas and a plurality of non-sintered areas based on a thermal model, and melting a subset of the plurality of sintered areas.

Abstract: On the fulfillment of a specified condition, a temperature signal outside an actuating device is detected to which a piezoelectric actuator is assigned. A piezoelectric temperature value is determined by the temperature signal. A temperature-capacitance characteristic value of the piezoelectric actuator is determined by the piezoelectric temperature value through specified mapping. A measured capacitance characteristic value is determined by a detected piezoelectric actuator charge and voltage corresponding to the temperature signal. A first correction capacitance characteristic value is determined by the measured capacitance characteristic value and the temperature-capacitance characteristic value. Independently, the charge and the voltage of the piezoelectric actuator is detected and the measured capacitance characteristic value is determined on the basis of these.